An Evaluation of Two Cross-shore Numerical Models in Predicting Subaerial Beach Morphology PDF Download

Author: Paul Michael Carroll
Publisher:
ISBN:
Category :
Languages : en
Pages : 86

View

Book Description
Keywords: morphology, coastal engineering, erosion, beach change.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
Numerical modeling in the nearshore region has become an important tool in both planning and design for coastal engineers. In recent decades, the complexity of these models has increased as our knowledge of existing processes has matured. However, gaps still remain between what we as engineers understand about the nearshore environment and what actually exists. Due to these uncertainties, modelers have taken different approaches to simulate sediment transport. The objective of this thesis is to evaluate the ability of two cross-shore numerical models, SBEACH and COSMOS, in their ability to predict subaerial beach profile change resulting from storm events. The predicted profiles from each model were compared to actual measured post-storm profiles. Quantitative comparison of results from both models was preformed using BMAP (Beach Morphology Analysis Package). A rating of good, fair, or poor was assigned to the models based on how closely each predicted the measured subaerial profile change. The waterline recession was also analyzed and a rating of reasonable or unreasonable was assigned to each model based on its predicted value. The fundamental difference between the two models is in regards to sediment transport. The SBEACH model predicts sediment transport rates as a function of wave energy dissipation. The COSMOS model utilizes the energetics approach where sediment transport is dependent on mean velocity currents in both the bed and the suspended boundary layers. The results presented within this report show that SBEACH performed equally as well or better in each case. The COSMOS model consistently over predicted erosion on the beach face and recession of the waterline. For the study sites where data was collected for this research, SBEACH is the recommended model by the author.

Author: Dano Roelvink
Publisher: World Scientific
ISBN: 9814304263
Category : Science
Languages : en
Pages : 291

View

Book Description
Key Features:There is currently no comprehensive textbook on coastal morphology ModelingProcess-based morphodynamic Modeling is rapidly becoming very useful and the authors have strongly contributed to this developmentCoastal morphology Modeling is an essential tool in a world that is facing increasing threats from coastal erosion, climate change and increasing population in coastal areas.

Author: V.C. Lakhan
Publisher: Elsevier
ISBN: 0080526640
Category : Science
Languages : en
Pages : 614

View

Book Description
This book unifies and enhances the accessibility of contemporary scholarly research on advances in coastal modeling. A comprehensive spectrum of innovative models addresses the wide diversity and multifaceted aspects of coastal research on the complex natural processes, dynamics, interactions and responses of the coastal supersystem and its associated subsystems. The twenty-one chapters, contributed by internationally recognized coastal experts from fourteen countries, provide invaluable insights on the recent advances and present state-of-the-art knowledge on coastal models which are essential for not only illuminating the governing coastal process and various characteristics, but also for understanding and predicting the dynamics at work in the coastal system. One of the unique strengths of the book is the impressive and encompassing presentation of current functional and operational coastal models for all those concerned with and interested in the modeling of seas, oceans and coasts. In addition to chapters modeling the dynamic natural processes of waves, currents, circulatory flows and sediment transport there are also chapters that focus on the modeling of beaches, shorelines, tidal basins and shore platforms. The substantial scope of the book is further strengthened with chapters concentrating on the effects of coastal structures on nearshore flows, coastal water quality, coastal pollution, coastal ecological modeling, statistical data modeling, and coupling of coastal models with geographical information systems.

Author: Taerim Kim
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 142

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

View

Book Description
Engineering structures and activities interfere with the sediment transport and morphological evolution in the coastal zone. Thus, it is necessary to understand, quantify, and predict the behavior of the morphology and how it interacts with such structures and activities when carrying out engineering projects on the coast (e.g., ports). The first step towards assessing the effects of engineering works on coastal morphology is to characterize the morphology itself and the mechanisms that control its evolution. Describing the morphology involves mean properties and trends as well as parameters quantifying a wide range of features that occur at many scales. The equilibrium shape of the beach profile or the shoreline, for a given configuration are typical examples of mean properties used to characterize the morphology, especially in engineering investigations. Morphological features in the coastal zone range from ripples to barrier islands, although it is typically only the feature at the scale of the project that has a potential for interaction with the engineering works and that needs to be studied. Here, the objective is to provide a brief overview of recent research in coastal morphology with the emphasis on quantifying the morphology of sandy beaches and its evolution. Most of the discussion is in the context of modeling, analytical or numerical, since engineering studies typically imply predictions about the future evolution of a particular coastal area and models are key tools in such studies.

Author: H. J. de Vriend
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 46

View

Book Description

Author: Entin Agustini Karjadi
Publisher:
ISBN:
Category : Ocean waves
Languages : en
Pages : 171

View

Book Description

Author: K. Bruce Dean
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author: K. Bruce Dean
Publisher: National Library of Canada
ISBN:
Category :
Languages : en
Pages : 183

View

Book Description